Add production observability: Sentry, pino, and sharp badge encoding.

Sentry is opt-in via DSN env vars; logger uses structured pino JSON in prod; badge uploads are normalized to GIF with sharp.

Co-authored-by: Cursor <[email protected]>

pnpm-workspace.yaml

@@ -6,6 +6,7 @@ onlyBuiltDependencies:
   - sharp
   - "@parcel/watcher"
   - "@swc/core"
+  - "@sentry/cli"
 
 overrides:
   fast-uri: "^3.1.3"